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Gerardo Lopez, M. Hossein Behboudian, Gemma Echeverria, Joan Girona, and Jordi Marsal

High quality peach fruit are produced in hot, arid regions of the world ( Westwood, 1993 ). World water supplies are limited and there might not be enough water for agriculture by 2025 ( Postel, 1998 ). For example, in Catalonia, Spain, where we did

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Todd W. Wert, Jeffrey G. Williamson, Jose X. Chaparro, E. Paul Miller, and Robert E. Rouse

development reduced FDP. The objective of this experiment was to determine the variation in fruit quality characteristics of four low-chill peach cultivars grown at three locations in Florida. Materials and Methods Three sites were chosen that represented

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Catherine Belisle, Uyen T.X. Phan, Koushik Adhikari, and Dario J. Chavez

quality ( Crisosto et al., 2006 ). Peach appearance and aroma are the initial indicators used by consumers to purchase fresh peaches, whereas repeat purchases are because of flavor and texture perceptions of the fruit previously consumed ( Baldwin, 2002

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Xavier Vallverdu, Joan Girona, Gemma Echeverria, Jordi Marsal, M. Hossein Behboudian, and Gerardo Lopez

In many production areas of the world, peach trees require irrigation to maximize yield and optimize fruit quality. However, the dwindling water supply on a global scale ( Postel, 1998 ) is making DI more of a necessity than a choice. The stage of

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G. Schnabel and C.H. Crisosto

; Heaney and Knight, 1994 ). The goal of this study was to investigate possible same-year beneficial effects of the QoI fungicide pyraclostrobin in the absence of disease pressure on antioxidant activity and commercially important peach fruit quality

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Esmaeil Fallahi, Bahar Fallahi, Bahman Shafii, and Mohammad E. Amiri

peach production, there is no comprehensive information on the bloom and harvest dates, yield, or quality of these fruit in the southwestern Idaho of the intermountain western region of the United States. The goal of this long-term project was to

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Tripti Vashisth, Mercy A. Olmstead, James Olmstead, and Thomas A. Colquhoun

are greatly appreciated for their great taste, flavor, and aroma. Ideal subtropical peach fruit quality and high nutritive value drives consumer satisfaction measured by initial and repeat consumer purchases ( Colaric et al., 2005 ; Delgado et al

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Ruixiang Yan, Joshua B. Gurtler, James P. Mattheis, and Xuetong Fan

and fruit quality following ultraviolet-C exposure, as affected by the removal of fuzz during post-ultraviolet-C storage of peaches. Materials and Methods Source of fruit and other materials. Peach [ P. persica (L.) Batsch, cv. PF25] was harvested

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Richard P. Marini, Donald Sowers, and Michele Choma Marini

Girdled or nongirdled `Biscoe' peach (Prunus persica [L.] Batsch) secondary scaffold branches were covered with shade fabric to provide a range of photosynthetic photon flux densities (PPFD) from 44 to 20 days before harvest (DBH), from 20 to 0 DBH or 44 to 0 DBH. Fruit quality was affected differently by the various periods of shade during the final swell of fruit development. Shading 40 to 20 DBH did not affect fruit weight or quality, whereas shading 44 to 0 DBH had the greatest effect on fruit weight and quality. Fruit quality was generally similar on branches exposed to 100% and 45% incident PPFD (IPPFD). Fruit on” girdled branches generally responded to shade more than fruit on nongirdled branches. Fruit weight was positively related to percent IPPFD for girdfed but not nongirdled branches shaded 20 to 0 DBH and 44 to DBH. On nongirdled branches, fruit exposed to 45% IPPFD for 44 to 0 DBH had 14% less red color and 21% lower soluble solids content (SSC) than nonshaded fruit. Harvest was delayed >10 days and preharvest fruit drop was increased by shading to <23% IPPFD. Shading branches for 20 to 0 or 44 to 0 DBH altered the relationship between flesh firmness and ground color: Firmness declined as ground color changed from green to yellow for fruit shaded 44 to 20 DBH, but firmness declined with little change in ground color for fruit shaded 20 to 0 or 44 to 0 DBH. Girdling results indicated that fruit weight and SSC partially depended on photosynthate from nonshaded portions of the canopy, whereas fruit redness, days from bloom to harvest, and ground color depended on PPFD in the vicinity of the fruit.

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Bob Ebel, Bobby Boozer, and Jim Pitts

This experiment was conducted to determine peach harvest delay, quality, and storage life by ReTain. ReTain was applied to `Loring' at 50 ppm at 17, 14, 12, 10, or 7 days before harvest (n = 4). Fruit were harvested based on conversion of ground color to yellow over five dates at 3- to 4-day intervals in July. Fruit were segregated into five size classes, counted, and weighed. Ten fruit were randomly selected from the 2.5-in. size class, and fruit quality was measured at harvest and after 5 days at 20 °C. Some fruit were stored for 5 days at 4 °C, removed from storage, and fruit quality measured 4 h after removal. Harvest date was not affected by ReTain. Firmness was higher for fruit held at 5 days in cold storage with earlier treatment application but not at harvest or after 5 days at room temperature, although the trend at harvest was similar to the 5-day storage data. Soluble solids were not affected at harvest, after storage or after 5 days at room temperature. Red blush was slightly less at harvest and after 5 days in cold storage with earlier application rates, but differences disappeared after 5 days at room temperature. Yellow color was higher with earlier application date after 5 days of cold storage but not at harvest or after 5 days at room temperature. These results indicate that ReTain may have some utility for improving peach firmness at harvest, but there was no benefit of harvest delay at the rates applied in this study.